这个题目思路就是比如101 的结果是010, 可以从111^101 来得到, 那么我们就需要知道刚好比101多一位的1000, 所以利用 while i <= num : i <<= 1, 去得到1000, 然后-1, 便得到111, 再跟num ^, 也就是异或即可. Code class Solution(object): def findComplement(self, num): i = 1 while i <= num: i <<= 1 return (i-1…

Given a positive integer, output its complement number. The complement strategy is to flip the bits of its binary representation. 給一個正整數,算出他的二補數 (2's complement). 二補數就是將該數字的二進制碼全部翻轉過來. Note: The given integer is guaranteed to fit within the range of…

Given a positive integer, output its complement number. The complement strategy is to flip the bits of its binary representation. Note: The given integer is guaranteed to fit within the range of a 32-bit signed integer. You could assume no leading ze…

Given a positive integer, output its complement number. The complement strategy is to flip the bits of its binary representation. Note: The given integer is guaranteed to fit within the range of a 32-bit signed integer. You could assume no leading ze…

题目要求 Given a positive integer, output its complement number. The complement strategy is to flip the bits of its binary representation. Note: The given integer is guaranteed to fit within the range of a 32-bit signed integer. You could assume no leadi…

Reverse bits of a given 32 bits unsigned integer. Example: Input: 43261596 Output: 964176192 Explanation: 43261596 represented in binary as 00000010100101000001111010011100,   return 964176192 represented in binary as 00111001011110000010100101000000…

题目: Given a positive integer, output its complement number. The complement strategy is to flip the bits of its binary representation. Note: The given integer is guaranteed to fit within the range of a 32-bit signed integer. You could assume no leadin…

problem 476. Number Complement solution1: class Solution { public: int findComplement(int num) { //正数的补数是对应二进制各位翻转,且从非零高位开始. bool start = false; ; i>=; i--)//err. { <<i)) start = true; <<i); } return num; } }; 参考 1. Leetcode_476. Number Com…

Given a non-empty 2D array grid of 0's and 1's, an island is a group of 1's (representing land) connected 4-directionally (horizontal or vertical.) You may assume all four edges of the grid are surrounded by water. Count the number of distinct island…

Given a non-empty 2D array grid of 0's and 1's, an island is a group of 1's (representing land) connected 4-directionally (horizontal or vertical.) You may assume all four edges of the grid are surrounded by water. Count the number of distinct island…